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The characteristic temperature To of AlgaInp quantum well lasers is measured. To values fall between 50 and 70 K, with only a slight decrease for short-cavity devices, suggesting the insignificance of Auger recombination in these high-bandgap alloys. The low To values are likely to be due to the weak carrier confinement afforded by the structure.
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Bour et al. (1989) studied this question.
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